The NHRA Technical Department released Horsepower changes December 13, 2021 after review and evaluation of written requests from Lucas Oil Sportsman Series competitors. All changes are effective January 1, 2022. Only those requests received by November 16, 2021 were considered during this scheduled evaluation. Any requests received after November 16, 2021 will be reviewed during the next scheduled evaluation of 2022.
Letter review is part of NHRA's commitment to evaluating input from the Sportsman racing community and is an important element of NHRA's Automatic Horsepower Factoring System. “No Change” combinations are listed so that competitors may see that requests were reviewed by the Technical Department, even though the request resulted in no change.
Requests for horsepower changes or reviews can be made here www.nhraracer.com/ahfs.asp. Requests for reviews must be received no later than November 15, 2022 to be included in the next scheduled horsepower and index review.
Stock Horsepower Changes
Engine OEM NHRA New
Make CID HP HP HP Years Affected
GM 350 160-175 287 279 1979 X body
Chev 230 140 140 136 68-70 Nova
Chev 305 135-145 177 174 1978 A body
Chev 327 250 255 245 1965 Impala
Chev 350 300 275 271 1969 Chevelle
Chev 427 390 366 361 68-69 Corvette
Mopar 273 235 207 201 65-67 Barracuda
Ford 302 230 217 214 1968 Mustang
Ford 289 210 194 191 1964 Mustang
Olds 307 138 207 204 87-90 B body
Pont 455 335 330 325 1971 T-37
Pont 455 360 335 330 1970 GTO
Stock Horsepower No Changes
OEM NHRA
Make CID HP HP Years Affected
Chev 283 220 214 65-66 Impala
Chev 283 245 245 1961 Corvette
Chev 350 295 290 1968 Nova
Chev 350 300 286 1969 Nova
Chev 396 350 335 1969 Chevelle
Chev 409 409 365 1962 Biscayne
Chev 427 425 425 1969 Camaro
Chev 427 435 435 1969 Corvette
Mopar 273 180 174 1965 Belvedere
Mopar 426 415 403 1964 Belvedere
Mopar 426 425 421 1964 Belvedere
Mopar 440 375 330 1967 GTX
Mopar 440 390 380 1969 Roadrunner
Ford 227 260 260 2011 Mustang
Ford 351 330 355 1971 Mustang
Ford 390 320 319 66-67 Fairlane
Ford 427 415 415 66-67 Fairlane
Pont 350 320 305 1968 Firebird
Pont 400 366 366 1969 GTO
* = no such combination listed in the class guide.
Super Stock Horsepower Changes
OEM NHRA New
Make CID HP HP HP Years Affected
GM 231 200 164 161 95-02 Firebird
Mopar 318 155 232 229 78-80 Aspen
Mopar 383 330 300 296 1968 Dart
Ford 289 210 207 204 1964 Mustang
Ford 302 230 220 207 1968 GT RWD
Ford 302 325 296 292 2012 GT RWD
Ford 302 385 385 380 2016 GT RWD
Super Stock Horsepower No Changes
OEM NHRA
Make CID HP HP Years Affected
Chev 327 300 280 1965 Chevelle
Chev 376 365 360 2015 Camaro
Chev 327 300 281 1966 GT RWD
Chev 350 350 337 13-15 GT RWD
Chev 350 360 328 1970 GT FWD *
Chev 350 360 330 1970 GT FWD
Chev 402 300 308 1971 GT RWD
Mopar 413 420 414 1962 Fury
Ford 302 350 350 2014 Cobra Jet
Ford 330 450 450 2012 GT RWD
* = no such combination listed in the class guide.